How do you impose a character limit on a text input in HTML?
There are 2 main solutions:
The pure HTML one:
<input type="text" id="Textbox" name="Textbox" maxlength="10" />
The JavaScript one (attach it to a onKey Event):
function limitText(limitField, limitNum) {
if (limitField.value.length > limitNum) {
limitField.value = limitField.value.substring(0, limitNum);
}
}
But anyway, there is no good solution. You can not adapt to every client's bad HTML implementation, it's an impossible fight to win. That's why it's far better to check it on the server side, with a PHP / Python / whatever script.
there's a maxlength attribute
<input type="text" name="textboxname" maxlength="100" />
In addition to the above, I would like to point out that client-side validation (HTML code, javascript, etc.) is never enough. Also check the length server-side, or just don't check at all (if it's not so important that people can be allowed to get around it, then it's not important enough to really warrant any steps to prevent that, either).
Also, fellows, he (or she) said HTML, not XHTML. ;)
use the "maxlength" attribute as others have said.
if you need to put a max character length on a text AREA, you need to turn to Javascript. Take a look here: How to impose maxlength on textArea in HTML using JavaScript
For the <input> element there's the maxlength attribute:
<input type="text" id="Textbox" name="Textbox" maxlength="10" />
(by the way, the type is "text", not "textbox" as others are writing), however, you have to use javascript with <textarea>s. Either way the length should be checked on the server anyway.
you can set maxlength with jquery which is very fast
jQuery(document).ready(function($){ //fire on DOM ready
setformfieldsize(jQuery('#comment'), 50, 'charsremain')
})
Related
Does it make any difference if i don´t include this attribute?
For example, on this <input>:
<input class="trn" id="searchInput" placeholder="Search..." />
Text is the default as #Xufox pointed out. Even if you try to validate against a W3C validator, and you type the input without the type, it will mark it as valid. You can try to validate your doc here:
https://validator.w3.org/check
However, as personal preference, and for readability purposes, I would always specify the type.
Regards
It's best practice to put type="whatever" because that will tell the HTML DOM what kind of input you want. Otherwise how does it know you want a radio button, checkbox, input field?
I saw this on a question recently.
<input type="radio" mess="whats up" name="q1" value="A" class="correct"/>
I can't get what the mess attribute do, and I couldn't see any result on the internet. So what is the mess attribute for?
It can be called as custom attributes intended to store a piece of information (purely for developer puropse)but it not advisable.
Instead you can go for HTML5 custom data attribute like
data-mess="whats up"
It can be easily accessed with .data() in jQuery.
<input type="radio" data-mess="whats up" name="q1" value="A" class="correct"/>
See
$('.correct').data('mess') // to getch the value
$('.correct').data('mess', 'some value') //to update the value
FYI:*custom data-** is purely validated with w3c validator. Whereas not with yours.
There is no mess attribute, in the question he just used it to attr and get the value through JQuery.
For example:
checked = $('input:checked').attr('mess'); sets checked to whatever the checked input had on the 'mess attribute', as seen in the question.
Another example:
$('#BobDiv').attr('txt'); will return 'Bob' if your HTML is <div id = 'BobDiv' txt = 'Bob' />
As seen here, you have to amend it in your !DOCTYPE declaration, though.
It's just a way to store arbitrary data in the tag. It does whatever the programmer intends it to do. Some people prefer to add custom attributes via data-foo, others prefer this syntax.
I would like to set up the message tip of a required field in html5
<html lang="en">
<input type="email" required="required" />
The message tip keeps on being labeled in french. I don't know which variable cause the browser to choose any language.
Isn't there a way to handle the html5 interaction languages smoothly (without JS)? I expected the langattr to be sufficient...
Had the same problem
Actually, you shoud use JS to achieve that. On another hand, you could recompile your browser from source and change manually texts that are not in your desired language if you absolutely do not want to use JS.
Yes, you should use
setCustomValidity("Votre Custom Mensaje Naturlish");
whithin an oninvalid handler function attached to the input element.
Something like:
<input type="email" oninvalid="handlerToCall(this)" required="required" />
Here you'll find answers that are valid and do work for what you want to do.
Try the jsfiddle live examples and you'll see for yourself :)
CodePen: http://codepen.io/leongaban/pen/hbHsk
I've found multiple answers to this question on stack here and here
However they all suggest the same fix, using type="number" or type="tel"
None of these are working in my codepen or project :(
Do you see what I'm missing?
Firstly, what browsers are you using? Not all browsers support the HTML5 input types, so if you need to support users who might use old browsers then you can't rely on the HTML5 input types working for all users.
Secondly the HTML5 input validation types aren't intended to do anything to stop you entering invalid values; they merely do validation on the input once it's entered. You as the developer are supposed to handle this by using CSS or JS to determine whether the field input is invalid, and flag it to the user as appropriate.
If you actually want to prevent non-digit characters from ever getting into the field, then the answer is yes, you need to use Javascript (best option is to trap it in a keyUp event).
You should also be careful to ensure that any validation you do on the client is also replicated on the server, as any client-side validation (whether via the HTML5 input fields or via your own custom javascript) can be bypassed by a malicious user.
It doesn't stop you from typing, but it does invalidate the input. You can see that if you add the following style:
input:invalid {
border:1px solid red;
}
I use a dirty bit of JS inline, it's triggered upon paste/keying (input).
Within your input tag add the following:
oninput="this.value=this.value.replace(/(?![0-9])./gmi,'')"
All it's doing is replacing any character not 0-9 with nothing.
I've written a tiny demo which you can try below:
Numbers only: <input oninput="this.value=this.value.replace(/(?![0-9])./gmi,'')"></input>
Firstly, in your Codepen, your inputs are not fully formatted correctly in a form.... Try adding the <form></form> tags like this:
<form>
<lable>input 1 </lable>
<input type='tel' pattern='[0-9]{10}' class='added_mobilephone' name='mobilephone' value='' autocomplete='off' maxlength='20' />
<br/>
<lable>input 2 </lable>
<input type="number" pattern='[0-9]{10}'/>
<br/>
<lable>input 3 </lable>
<input type= "text" name="name" pattern="[0-9]" title="Title"/>
</form>
Just add a check to the onkeypress event to make sure that the no alphanumeric characters can be added
<input
type="text"
placeholder="Age"
autocomplete="off"
onkeypress="return event.charCode >= 48 && event.charCode <= 57"
maxlength="10"
/>
I was contacted by my client saying that users complaint saying that some fields now show a tooltip with a message "Please Fill out This Field". I couldn't believe what I heard... but the client is right - using latest Chrome version some fields show a browser tooltip with this message even side by side with my validators!
What's the problem? What am I missing?
Thanks.
EDIT:
The HTML generated by my user control is as follows:
<input name="tbMontante" type="text" maxlength="8" size="10" tbMontante" class="Montantetextfield"
FieldName="Montante"
Required="True"
AllowDecimalValues="True"
/>
EDIT:
My doctype is as follows:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
Should my browser use HTML 5 to parse it?
Are you using the HTML5 required attribute?
That will cause Chrome 10 to display a balloon prompting the user to fill out the field.
https://www.w3.org/TR/html5/sec-forms.html#element-attrdef-form-novalidate
You can disable the validation in the form.
Put novalidate="novalidate" on <form> tag.
<form novalidate="novalidate">
...
</form>
In XHTML, attribute minimization is forbidden, and the novalidate
attribute must be defined as <form novalidate="novalidate">.
http://www.w3schools.com/tags/att_form_novalidate.asp
To stop that Html5 popup/balloon in Web-kit browser use following CSS
::-webkit-validation-bubble-message { display: none; }
As I mentioned in your other question:
The problem to do with that fact, that you invented your own non-standard attributes (which you shouldn't have done in the first place), and now new standardized attributes (or attributes in the process of being standardized) are colliding with them.
The proper solution is to completely remove your invented attributes and replace them with
something sensible, for example classes (class="Montantetextfield fieldname-Montante required allow-decimal-values"), or store them in JavaScript:
var validationData = {
"Montante": {fieldname: "Montante", required: true, allowDecimalValues: true}
}
If the proper solution isn't viable, you'll have to rename them. In that case you should use the prefix data-... because that is reserved by HTML5 for such purposes, and it's less likely to collide with something - but it still could, so you should seriously consider the first solution - even it is more work to change.
You need to add the attribute "formnovalidate" to the control that is triggering the browser validation, e.g.:
<input type="image" id="fblogin" formnovalidate src="/images/facebook_connect.png">
If you have an html form containing one or more fields with "required" attributes, Chrome (on last versions) will validate these fields before submitting the form and, if they are not filled, some tooltips will be shown to the users to help them getting the form submitted (I.e. "please fill out this field").
To avoid this browser built-in validation in forms you can use "novalidate" attribute on your form tag.
This form won't be validated by browser:
<form id="form-id" novalidate>
<input id="input-id" type="text" required>
<input id="submit-button" type="submit">
</form>
In Chrome (v.56 is what I'm using but I AFAIK this applies generally) you can set title=" " (a single space) and the automatic title text will be overridden and nothing displayed. (If you try to make it just an empty string, though, it will treat it as if it isn't set and add that automatic tooltip text you've been getting).
I haven't tested this in other browsers, because I found it whilst making a Google Chrome Extension. I'm sure once I port things to other browsers, though, I'll see if it works in them (if even necessary), too.
Hey, we just did a global find-replace, changing Required=" to jRequired=". Then you just change it in the jquery code as well (jquery_helper.js -> Function ValidateControls). Now our validation continues as before and Chrome leaves us alone! :)